cubnsensation

Hey guys, i relocated my battery to the trunk on my 99 civic coupe, i ran a 2 gauge wire from the starter to the battery for the positive and grounded the negative to the frame under the trunk, everything good there.

the problem now is my fuse box (originally next to the battery), power cable that would connect to the battery is obviously too short, my question is, what size cable to buy considering it has to reach to the trunk?

Relic1

one 2awg wire is plenty for starter and battery. (no need for another long run of large gauge wire)
jumper the starter and fusebox connections and call it a day.
4gauge should be plenty for that jumper.

you can also take your main cable from the battery and run it to the fuse box, then jumper to the starter.
depending on how you routed the cable you may have enough length all ready.

cubnsensation

the thing is i already wired the car, i ran the 2 gauge cable under the car from the starter to the battery in the trunk, the fuse box is now behind my glove dept cuz i wanted to tuck it so it just sitting there until i find a way to run a cable from the fuse box to the battery positive, all im trying to figure out is what size cable to use considering its farther away from the battery now.

mk378

If you want a run from the battery for appearance purposes, 4 AWG would still be appropriate. You could also tee into the 2 AWG wire somewhere in between the battery and starter, but this needs to be done very carefully because a bad connection or a short to ground is likely to set the car on fire.

cubnsensation

so run a 4 gauge cable straight frm the battery to the fuse box?

jdblock

Do you have a fuse/breaker within 1' of the battery terminal?

cubnsensation

no i dont bro, battery in the trunk right now, everything else is up front

jdblock

Its cheap insurance. The car has that stock for a reason.

cubnsensation

so what do you suggest? this is my first time donig anything electronic

jdblock

Look in the fuse box to see what amp the main fuse is. You need to add a fuse for the same rating, near the battery. You can use one for stereo equipment, and just splice it inline, just cut the cable (under 1' from battery) and install it. Secure the fuse to the car so the cable doesn't move around.

Or, you can buy an automotive circuit breaker, and install that instead. A breaker can keep you from being stranded because you don't have a spare fuse, just reset the breaker.

cubnsensation

sounds like the circuit breaker would be easier for me to do, like i said im not too familiar with electronics, i thought it was going to be as simple as move the battery plug the wire and play lol

you have a link of a breaker i can use for reference, and why does it have to be 1 inch from the battery? just curious, also how exactly do you connect or to what?

mk378

I think a 100 amp would be right for the fuse box line. You really can't put a fuse in the starter line though, since the starter can draw a few hundred amps. The reason to have the fuse / breaker close to the battery is that it only can protect against shorts that happen after the fuse. So you want as little unprotected wiring as possible.

cubnsensation

ill buy a circuit breaker on my way home from work and ill youtube some videos on how to connect it.

my only question now is, what cable size goes from the fuse box all the way to the circuit breaker, i have some left from the 2 gauge i use from the starter to the battery but im sure thats too much juice for the fuse box and also im guessing w.e cable i use from the fuse box to the circuit breaker it will be the same cable i use from the CB to the battery right

Relic1

If you have enough left to make the run, go for it.... electricity does not work that way.
You can connect 00 wire to the fuse box and it will not damage anything.
It would be a huge waste of money and heavy, but it will not damage anything. (unless the weight of the cable snaps off the terminal)
think of a fire hose connected to a house spigot.

cubnsensation

Is this the right way to connect it?

Relic1

yes, <18" from battery (or prior to any transition through a metal panel, even if through a grommet)

cubnsensation

what you mean by "yes, <18" from battery (or prior to any transition through a metal panel, even if through a grommet) "

cubnsensation

Alright ppl so i found 11 feet of 4 gauge wire that ill be using for the fuse box, how do i determine whst breaker ro get? And how far or close to the battery does it need to be

jdblock

1 FOOT, not 1 inch. '=foot, "=inch

Put it as close to the battery as you can get it, pretty simple, as you want to protect as much of the wire as you can. You also don't want the breaker loose, bolt it to the chassis.

Search for an "automotive breaker" online. Bussmann is what I'd get.

cubnsensation

Searching right now, but what amp or volt to get is what i mean, do you base it off the battery or do you base it off the main fuse on the fuse box, does it have to match numbers or amps or have more or less

cubnsensation

cubnsensation

Will this breaker work?

mk378

Yes that looks like a good choice.